Do not under any circumstances call her. There is no chance that doing so will make things better, but there is a good chance that doing so will hurt your chances. I've been given the break line before, and realized that it was her trying to have her cake and eat it too. Don't give her the opportunity. She gets to do whatever she wants, while still having you on a leash waiting for her.
Your only hope is to flip it, and when the week is over, tell her you guys should extend it for another week. Don't be specific about what you've been doing, but just tell her you've been busy, and you think the time off was a good idea. This gives mystery and tells her that you don't need her and that she might have to do something to get YOU back. The only reason you won't follow this advice is if you think that doing so will cost you the relationship. What you have to realize is that the relationship is already in deep trouble. Either it'll end no matter what you do, you flip it and make it more to your liking, or you do whatever you can to please her and stay in an undesirable relationship. You don't want to be in a relationship where she has all the power and can call breaks, do whatever she wants, and then come back to you, while you try to please her harder being scared that you're close to losing her.